Improvement in mole-plows



W. P. GOOLMAN.

' .Mole-Plow.

' NO. 26,426. Patented Dec. 13,1859,

ITLIL UNITED STATES PATENT it F I SAMUEL B. MORRIS. I

IMPROVEMENT IN Mo E-PLows.

Specification forming part of Letters Patent N 0. 26,426, dated December 13, 1859.

To all whom it may concern:

Be it known that I, WILLIAM P. GOOLMAN, of Dublin, Wayne county, Indiana, have invented a certain new and useful Improvement in Mole-Flows; and I hereby declare thefollowing to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, making part of this specification.

The present invention consists, first, in an arrangement for adjusting the pitch of the mole in respect to that of the beam; second, in a provision for inclining the colter at will to compensate for the downward tendency of the mole, as will be hereinafter explained.

In the accompanying drawings, Figure 1 is a vertical longitudinal section at a: a), Fig. 2. Fig. 2 is a plan. Fig. 3 is a front view of the mole.

K represents a sled provided with standards L L and cross-bars M M.

P is the beam, pivoted in front between the standards L by means of a cross-bar p.

N is a screwthreaded rod firmly attached to the beam near its rear end and working freely;

through the cross-bar M.

H represents a handwheel or any other suitable form of nut working on the rod N, and bearing upon the cross-bar M so as to limit the descent of the beam to any extent desired, or to elevate or permit it to descend at the will of the operator.

S are draft-rods connected at their front ends to the draft-clevis G, and at their rear ends to a metallic strengthening-plate attached to the under side-of the beam. The clevis G is attached to the cross-bar M, as represented.

Q is the colter, mortised loosely in the beam near its rear end. At the upper side of the beam the mortise containing the colter considerably exceeds the breadth of the latter, in order to admit of inclining it to any extent desired by means of a cam, D.

.g are notches in which the cam D engages, so as to support the colter at any suitable height in the beam.

R is the mole, pivoted in front to the lower end of the colter Q.

E is a lever firmly attached to the mole in the rear of the colter, and extending above the beam, where it is held in any position desired by a rack, F, pivoted to the top of the colter. The lever E is of such form that its upper part is precisely at right angles to the sole of the mole, so as to form a constant index of thein clination of the latter. The general contour of the mole is conical, but it is formed with wings r, of peculiar form, adapted to gather earth from the sides and. compress it against the top of the drain, and also to in a measure counteract the downward tendency of the mole. I

A longitudinal groove is formed in the center of the sole, extending fromnear the point backward, so as to leave a portion of uncompressed earth in the center of the drain, in which the water-chamber will be worn, while. the sides of the drain are protected from injury.

in order that the earth may be forcibly compressed against the top of the drain, and in order to relieve the rod N and other parts in a measure from the strain to which they would I be thereby subjected, the colter is inclined backward, so as to give it an upward tendency, to counteract the downward tendency of the mole. It will be evident that as the imple mentis drawn through the groundthe respect ive edges of the colter will forcibly press against colter at the proper point, thereby limiting the degree of backward inclination which it will I assume below the beam.

I do not claim broadly attaching a lever rigidly to a mole or plowshare in order to adjust its pitch.

I claim as new andof my invention herein and desire to secure by Letters Patent- 1. The lever E, rigidly attached to a pivoted The operation 1s as follows: In order to run the mole into the ground, the lever E is drawn forward and there retained until the mole has attained the requisite depth. The lever is then so placed as to set the mole at any pitch de'. sired, but always with a downward tendency,

pose set forth.

mole, R, in thedescrib'e'd combination with the; In testimony of which invention 1 hereunto rack F, theiwhole bein'g' constructed and ar set my hand. ranged and operating substantially as and for the purposes set forth. W. P. GOOLMAN.

2. The cam D in the described combination with the colter Q and adjustable pivoted mole Witnesses: It, -operati-ng substantiallyasand for the-pur- V J. V. HOFFMAN,

v OLIVER O. GREEN. 

